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| RERDING PRACTICE | |
| 作者姓名： | 王道庚 |
| 摘 要： | Heat and Cold(热胀冷缩) At a physics(物理)lesson the teacher asks the chil-dren about the effects(效果) of heat and cold on thebody. “Heat makes things bigger and cold makes thingssmaller.”answers a bright(聪明的)boy. |
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